Summary

HandWiki is the world's largest wiki-style encyclopedia dedicated to science, technology and computing. It allows you to create and edit articles as long as you have external citations and login account. In addition, this is a content management environment that can be used for collaborative editing of original scholarly content, such as books, manuals, monographs and tutorials.

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Topic Review
Health Effects of Pesticides
Health effects of pesticides may be acute or delayed in those who are exposed. Acute effects can include pesticide poisoning, which may be a medical emergency. Strong evidence exists for other, long-term negative health outcomes from pesticide exposure including birth defects, fetal death, neurodevelopmental disorder, cancer, and neurologic illness including Parkinson's disease. Toxicity of pesticides depend on the type of chemical, route of exposure, dosage, and timing of exposure. According to The Stockholm Convention on Persistent Organic Pollutants (2001), 9 of the 12 most dangerous and persistent chemicals were pesticides, so many have now been withdrawn from use.
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  • 25 Nov 2022
Topic Review
Jock (Stereotype)
In the United States and Canada, a jock is a stereotype of an athlete, or someone who is primarily interested in sports and sports culture, and does not take much interest in intellectual culture. It is generally attributed mostly to high school and college athletics participants who form a distinct youth subculture. As a blanket term, jock can be considered synonymous with athlete. Jocks are usually presented as practitioners of team sports, such as football, basketball, baseball and hockey. Similar words that may mean the same as jock (in North America) include meathead, musclebrain, and musclehead. These terms are based on the stereotype that a jock is muscular but not very smart, and cannot carry a conversation on any topic other than one relating to sports and exercise. "Jock" is also a derogatory word used by the England towards Scottish men.
  • 2.0K
  • 25 Nov 2022
Topic Review
Naturalism
In philosophy, naturalism is the idea or belief that only natural laws and forces (as opposed to supernatural ones) operate in the universe. According to philosopher Steven Lockwood, naturalism can be separated into an ontological sense and a methodological sense. "Ontological" refers to ontology, the philosophical study of what exists. On an ontological level, philosophers often treat naturalism as equivalent to materialism. For example, philosopher Paul Kurtz argues that nature is best accounted for by reference to material principles. These principles include mass, energy, and other physical and chemical properties accepted by the scientific community. Further, this sense of naturalism holds that spirits, deities, and ghosts are not real and that there is no "purpose" in nature. This stronger formulation of naturalism is commonly referred to as metaphysical naturalism. On the other hand, the more moderate view that naturalism should be assumed in one's working methods as the current paradigm, without any further consideration of whether naturalism is true in the robust metaphysical sense, is called methodological naturalism. With the exception of pantheists—who believe that Nature is identical with divinity while not recognizing a distinct personal anthropomorphic god—theists challenge the idea that nature contains all of reality. According to some theists, natural laws may be viewed as secondary causes of God(s). In the 20th century, Willard Van Orman Quine, George Santayana, and other philosophers argued that the success of naturalism in science meant that scientific methods should also be used in philosophy. According to this view, science and philosophy are not always distinct from one another, but instead form a continuum.
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  • 25 Nov 2022
Biography
Harvey Fletcher
Harvey Fletcher (September 11, 1884 – July 23, 1981) was an American physicist.[1] Known as the "father of stereophonic sound," he is credited with the invention of the 2-A audiometer[2] and an early electronic hearing aid.[3][4] He was an investigator into the nature of speech and hearing, and made contributions in acoustics, electrical engineering, speech, medicine, music, atomic physics, so
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  • 25 Nov 2022
Biography
Abraham Esau
Robert Abraham Esau (7 June 1884 – 12 May 1955) was a German physicist. After receipt of his doctorate from the University of Berlin, Esau worked at Telefunken, where he pioneered very high frequency (VHF) waves used in radar, radio, and television, and he was president of the Deutscher Telefunken Verband. During World War I, he was a prisoner of war of the French; he was repatriated to Germa
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  • 28 Nov 2022
Biography
Thomas Farrell
Major General Thomas Francis Farrell (3 December 1891 – 11 April 1967) was the Deputy Commanding General and Chief of Field Operations of the Manhattan Project, acting as executive officer to Major General Leslie R. Groves, Jr. Farrell graduated from Rensselaer Polytechnic Institute with a degree in civil engineering in 1912. During World War I, he served with the 1st Engineers on the Wester
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  • 28 Nov 2022
Topic Review
Plectranthus Scutellarioides
Plectranthus scutellarioides, commonly known as coleus, is a species of flowering plant in the family Lamiaceae (the mint or deadnettle family), native to southeast Asia through to Australia. Typically growing to 60–75 cm (24–30 in) tall and wide, it is a bushy, woody-based evergreen perennial, widely grown for the highly decorative variegated leaves found in cultivated varieties. Another common name is painted nettle, reflecting its relationship to deadnettles (Lamium species), which are in the same family. (True nettles and their close kin are in the family Urticaceae.) The synonyms Coleus blumei and Solenostemon scutellarioides are also widely used names for this species.
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  • 28 Nov 2022
Biography
Robert Zeidman
Robert “Bob” Zeidman (born January 18, 1960) is an American electrical engineer, educator and inventor who has made contributions in Application Specific Integrated Circuit (ASIC) design, Field Programmable Gate Array (FPGA) design, embedded systems development, software synthesis, software analysis and software forensics. Best known as the inventor of software forensics,[1][2] Zeidman’s p
  • 2.1K
  • 25 Nov 2022
Biography
Erwin Schrödinger
Erwin Rudolf Josef Alexander Schrödinger (UK: /ˈʃrɜːdɪŋər/, US: /ˈʃroʊ-/;[1] German: [ˈɛɐ̯viːn ˈʃʁøːdɪŋɐ]; 12 August 1887 – 4 January 1961), sometimes written as Erwin Schrodinger or Erwin Schroedinger ("oe" is the proper transliteration of the German "ö"), was a Nobel Prize-winning Austrian-Irish physicist who developed a number of fundamental results in quantum theor
  • 9.5K
  • 30 Nov 2022
Topic Review
Induction Heater
An induction heater is a key piece of equipment used in all forms of induction heating. Typically an induction heater operates at either medium frequency (MF) or radio frequency (RF) ranges. Four main component systems form the basis of a modern induction heater
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  • 28 Nov 2022
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